两档输电线路间的非线性耦合振动特性研究  

STUDY ON NONLINEAR COUPLED VIBRATION CHARACTERISTIC OF TWO-SPANS TRANSMISSION LINE SYSTEM

作　　者：谢献忠[1] 龙昊[1] 李丹[1] 

机构地区：[1]湖南科技大学土木工程学院,湘潭411201

出　　处：《动力学与控制学报》2015年第3期170-176,共7页Journal of Dynamics and Control

基　　金：国家自然科学基金资助项目(11272119);湖南省教育厅重点项目(12A052)~~

摘　　要：考虑几何非线性的影响,推导了两档输电导线与悬垂绝缘子串耦合振动的非线性动力学方程,并运用数值分析软件对不同工况下的振动响应进行了数值求解.基于输电导线振动的位移时程曲线,得到了两档输电导线的非线性耦合振动特性和共振特性,在小传输角度情况下,角度对输电导线的振动幅度没有明显影响,但振动系统的静平衡位置会发生偏移.The nonlinear vibration equations of two-spans transmission line coupled with suspension insulator string were derived, where the geometric nonlinearity of transmission line was considered. Solutions under differ- ent working conditions were obtained by numerical analysis. The displacement-time curves illustrated the charac- teristics of nonlinear coupled vibration and internal resonance of the system. In the case of small transmission an- gle, the value of the angle had no obvious effect on the amplitude of transmission line, but the static equilibrium position of system was offset.

关 键 词：两档输电线路 非线性振动 耦合效应 数值解 共振 

分 类 号：TM75[电气工程—电力系统及自动化]